The group which made the most insurance claims after fatigue-related car crashes this year was aged 18 to 29 and made up 10.6 per cent of claims.
That was closely followed by males aged 30 to 39 at 10.4 per cent. The third largest group was females aged 40 to 49.
Men aged over 70 years old made the most expensive claims, averaging $11,787.
AA Insurance customer records showed that men were more likely not to admit being tired and were more likely than women to have an accident resulting from falling asleep at the wheel.
The AA warned being sleepy behind the wheel affected the ability to drive in the same way that drinking alcohol could because it impaired vision and increased reaction times.
"Customers say that before the accident they were feeling tired but thought they were still capable of driving," Mr Fox said.
Fatigue claims were also common among shift workers and claims were also received from drivers suffering from the flu or feeling sick.
"Everyone is susceptible to fatigue, especially when driving late at night or early in the morning. You may be suffering from fatigue if you have trouble focusing on the road, are continually yawning or daydreaming while driving," Mr Fox said.
Drinking alcohol can also increase the effects of fatigue, as can medication that makes you drowsy.
SAFETY TIPS
* Take regular rest breaks when driving long distances.
* Get a good night's sleep before going on the road.
* Avoid alcohol as this can increase the effects of fatigue.
* Share the driving where possible.
* Don't drive at times you're usually sleeping.
* Be aware of medication that may affect your ability to drive.
* Recognise the signs of drowsiness.
* Pull over if you feel drowsy or lose concentration.